Emerson, New Jersey, United States [Borough]; population was 6,930 in 1990; housing units was 2,257 in 1990; location is 40°58'N 74°1'W; land area is 2.22 square miles (1,424 acres); water area is 0.18 square miles (117 acres); FIPS code is 21450 [SourceCBP]